diff --git a/R/revealjs_presentation.R b/R/revealjs_presentation.R
index 99174c7..1ad46fc 100644
--- a/R/revealjs_presentation.R
+++ b/R/revealjs_presentation.R
@@ -142,6 +142,8 @@
       value <- reveal_options[[option]]
       if (is.logical(value))
         value <- jsbool(value)
+      else if (is.character(value))
+        value <- paste0("'", value, "'")
       args <- c(args, pandoc_variable_arg(option, value))
     }
   }
diff --git a/inst/NEWS b/inst/NEWS
index 94d696e..3e3e8b6 100644
--- a/inst/NEWS
+++ b/inst/NEWS
@@ -9,6 +9,8 @@
 
 - Support for zoom, search, and notes reveal.js plugins
 
+- Ability to specify slideNumber reveal_option as either string or boolean
+
 
 Version 0.6
 -----------------------------------------------------------------------